I used to use one of these years (and years!) ago, to mow the churchyard in Hints, where I grew up. I always wanted one of my own. I did have one some time back, can’t remember exactly what happened to it, but now I have one…it comes with a plough attachment too.
The Allen Scythe does not resemble a hand scythe but serves the same purpose. The engine drives a 2-foot-wide (0.6 m) or 3-foot-wide (0.9 m) or 4ft wide toothed blade sliding back and forth horizontally across stationary teeth to produce a scissor action, and also drives two large wheels for forward travel. There are handles to allow the machine to be controlled by an operator walking behind it, controls comprise throttle and clutch. The wheels are driven through ratchets which allow either wheel to free-wheel when steering the machine (the wheel on the outside of the turn will be able to rotate faster than the inside wheel). This system is simpler than a differential axle and, unlike a differential, means that when one wheel slips the other keeps turning and driving the machine forwards. It has the disadvantage that the machine can run away from the operator downhill and for this reason the ratchet mechanisms can be locked. The machines are extremely robust and many from the 1950s are still in regular use. They can be dangerous, as the clutch system only disengages the wheel drive from the engine: the blades cut all the time the engine runs.
Later models were available with different attachments, including rotating brushes that replaced the cutting head, air or water pumps and saws or hedge trimmers that drove from the starting pulley side of the engine.
I will work on it to get it going…and let you know the progress….
